†order Protocaridida Simonetta and Delle Cave 1975 (crustacean)
Parent taxon: Crustacea according to D. E. G. Briggs et al. 2008
Sister taxa: Bostrichopodida, Bradoriamorphes, Canadaspidida, Edriophthalma, Entomostraca, Eucrustacea, Labrophora, Malacostraca, Maxillopoda, Nuculina, Pentapalaeopycnon, Phosphatocopida, Pycnogonites, Roddyia, Siphonocetes, Thecostraca, Waptiida
Subtaxa: none
Ecology:
Distribution: found only at Huayuan biota, Renkupo section quarry (Cambrian of China)